CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 6,015	$ 7,975	$ 11,220	$ 15,053
Other comprehensive income (loss):
Unrealized loss on available-for-sale securities, net of taxes	(198)	0	(1,673)	0
Net gain reclassified from accumulated other comprehensive income to net income	0	0	(468)	0
Translation adjustments	2,429	(3,365)	2,349	(6,030)
Total other comprehensive income (loss)	2,231	(3,365)	208	(6,030)
Comprehensive income	$ 8,246	$ 4,610	$ 11,428	$ 9,023